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【单选题】
The most important component in the blood-testis barrier is:A.
endothelial cell
B.
basement membrane
C.
tight junction
D.
connective tissue
E.
Leydig cell
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【简答题】Why do you collect together stamps?
【单选题】---Why do you collect so many old bikes? ---I’ 11 have them ( ) and give away to the children who don ’t have bikes
A.
used up
B.
given up
C.
fixed up
D.
set up
【单选题】— Why do you collect so many old bikes? — I'll have them ______and give away to the children who don't have bikes.
A.
used up
B.
given up
C.
fixed up
D.
set up
【简答题】--- Why do you collect so many old bikes?--- I'll have them ______ and give away to the children who don't have bikes.A. fixed up B. used up C. set up D. given up
【简答题】- Why do you collect so many old bikes ? - I'Il have them and give away to the children who don't have bikes .( )A. used up B. given up C. fixed up D. set up
【单选题】—Why do you collect so many old bikes? —I'Il have them _ and give away to the children who don't have bikes.
A.
used up
B.
given up
C.
fixed up
D.
set up
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